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Inventories (Tables)
6 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventory
At June 30, 2020 and December 31, 2019, inventory consists of the following:
 
June 30, 2020
 
December 31, 2019
Finished goods
$
728

 
$
1,027

Work in process
427

 
460

Raw materials
400

 
408

Materials and supplies
101

 
104

 
$
1,656

 
$
1,999